Improvement in bench-planes



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.BENCH-PLANE.

AIl, @MAW www Wimfsw/ UNITED: STATES PATENT CFFICE.

JOSEF NICHT, 0F AUBURN, NEW YORK.

IMPROVEMENT IN BENCH-PLANES.

Specification forming part rof Letters Patent No. 173,177, datedFebruary 8, 1876; application filed July 29, 1875.

To all whom it may concern:

Be it known that I, JOSEF NICHT, of Auburn, in the county of Cayuga andState of New York, have invented certain new and useful Improvements inBench-Planes; and that the following is a full, clear, and exactdescription of the same, reference being had to the accompanyingdrawings making a part of this specication, in which- Figure 1represents a perspective view of my improved plane, with the`plane-ironsand fastening-cap'removed. Fig. 2 represents a longitudinal verticalsection through my improved plane. Fig. 3 represents a detached viewofthe mechanism employedpfor raising or lowering the plane-irons. Fig. 4repre! sents a perspective view of the cap overlying the plane-irons,showing its under side and connected wedge. Fig. 5 represents amodication of the same.

Similar letters of reference, where they occur, denote like parts'in allthe gures.

My invention relates to certain combinations of mechanisms used to set.or adjust plane-irons from the exterior of the plane without separatingthe parts, and with great expedition and accuracy. y

My invention relates also to the means by which the plane-irons can bemoved laterally to adjust them in that direction, and also to the meansby which the plane-irons are retained in position by means of a cap andwedge. y f

To enable others skilled in the art to make 4and use my invention, Iwill proceed to describe the same with reference to the drawlngs. I

A represents the wooden stock of a plane, to whichv is attached, bymeans of the screw a, the plate B, that has formed on its under sidebearings b for the shaft c, around which the geared segment and lever Crevolve. The rear end of this lever C is slotted, so as to it over a pinformed on one side of the nut d, that is raised or lowered byvascrewshaft, D, having a knob or thumb-piece, D',

f upon its upper end, by which it may be readily operated to raise orlower the nut d, and correspondingly the rear end of the lever C. 0n thefront of the lever C there is a geared segment, C', that engages withthe rack E. This rack is located in a groove, b', cut out of the plateB, so as to furnish it with the bearings required for a free and steadymotion up or down. This rack E has on its up per surface a centralprojection, e, and an' other at e', either or both of which engage withthe head of a screw, f, that is centrally recessed for that purpose.This screw f is otherwise the one employed to connect the plane-iron Fand its iron cap F', so that by turning the screw-shaft D theplane-irons 'may be moved up or down at pleasure to adjust them, andwhen adjusted they are irmly held in that position. G is a metallic capoverlying the plane -irons. A slot, g, is cut through it, so as to allowthe head of the screw h to pass through it and rest on its uppersurface. Under the yrear of this cap Gr there is a wedge, H, by whichthe cap may be raised at that point and pressed against the plane-ironsat or near their lower ends to clamp them together. The wedge H isretained vin connection with the cap Gr by grooves formed on the latter,and a bolt, t', that connects the two together. To the plate B-and stockA ispivoted at a a lever, k, the v rear end .of which projects upward,so as to be readily operated from the exterior of the plane, itterminating in a knob, k', by which it can be moved. The inner end ofthis lever 7c is bent up, as at l, and passes into the slot ordinarilycut in plane-irons F, so that the latter can be moved laterally'toadjust said irons in that direction. Thus the vertical and lateraladjustments .of the plane-irons may be instantly and very accuratelymade. n

In Fig. 5 is shown a modification of the cap Gr, the slot g of Fig. 4being dispensed with, and the hook m formed i-n its place, so as toengage under the'head of a bolt, or any simi-Y lar projection attachedto the stock A of the plane. h

I claim as my invention- In combination with the plane-stock A, thelongitudinally-slotted plane-iron F and the mechanism composed of thescrew yl1, and cap Gr, carrying, secured to it, the wedge H, forclamping said plane-iron to the plane, the lever k', pivoted to thestock of the plane,

and engaging with the slot of the plane-iron to adjust it laterally, allarranged substantially as shown and described.

JOSEF NIGHT. Witnesses:

HORACE T. Cook, W. P. BEAJaDsLEY.

